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import of dnsmasq-2.11.tar.gz

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This commit is contained in:
Simon Kelley
2004-08-02 18:27:27 +01:00
parent feba5c1d25
commit dfa666f24b
11 changed files with 110 additions and 52 deletions
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18
src/forward.c
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@@ -36,7 +36,8 @@ void forward_init(int first)
/* Send a UDP packet with it's source address set as "source"
unless nowild is true, when we just send it with the kernel default */
static void send_from(int fd, int nowild, char *packet, int len,
union mysockaddr *to, struct all_addr *source)
union mysockaddr *to, struct all_addr *source,
unsigned int iface)
{
struct msghdr msg;
struct iovec iov[1];
@@ -94,7 +95,7 @@ static void send_from(int fd, int nowild, char *packet, int len,
{
struct cmsghdr *cmptr = CMSG_FIRSTHDR(&msg);
struct in6_pktinfo *pkt = (struct in6_pktinfo *)CMSG_DATA(cmptr);
pkt->ipi6_ifindex = 0;
pkt->ipi6_ifindex = iface; /* Need iface for IPv6 to handle link-local addrs */
pkt->ipi6_addr = source->addr.addr6;
msg.msg_controllen = cmptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
cmptr->cmsg_type = IPV6_PKTINFO;
@@ -191,8 +192,8 @@ unsigned short search_servers(struct server *servers, unsigned int options, stru
/* returns new last_server */
static struct server *forward_query(int udpfd, union mysockaddr *udpaddr,
struct all_addr *dst_addr, HEADER *header,
int plen, unsigned int options, char *dnamebuff,
struct all_addr *dst_addr, unsigned int dst_iface,
HEADER *header, int plen, unsigned int options, char *dnamebuff,
struct server *servers, struct server *last_server,
time_t now, unsigned long local_ttl)
{
@@ -246,6 +247,7 @@ static struct server *forward_query(int udpfd, union mysockaddr *udpaddr,
forward->source = *udpaddr;
forward->dest = *dst_addr;
forward->iface = dst_iface;
forward->new_id = get_id();
forward->fd = udpfd;
forward->orig_id = ntohs(header->id);
@@ -310,7 +312,7 @@ static struct server *forward_query(int udpfd, union mysockaddr *udpaddr,
/* could not send on, return empty answer or address if known for whole domain */
plen = setup_reply(header, (unsigned int)plen, addrp, flags, local_ttl);
send_from(udpfd, options & OPT_NOWILD, (char *)header, plen, udpaddr, dst_addr);
send_from(udpfd, options & OPT_NOWILD, (char *)header, plen, udpaddr, dst_addr, dst_iface);
return last_server;
}
@@ -405,7 +407,7 @@ struct server *reply_query(struct serverfd *sfd, int options, char *packet, time
return NULL;
header->id = htons(forward->orig_id);
send_from(forward->fd, options & OPT_NOWILD, packet, n, &forward->source, &forward->dest);
send_from(forward->fd, options & OPT_NOWILD, packet, n, &forward->source, &forward->dest, forward->iface);
forward->new_id = 0; /* cancel */
}
@@ -564,9 +566,9 @@ struct server *receive_query(struct listener *listen, char *packet, struct mx_re
m = answer_request (header, ((char *) header) + PACKETSZ, (unsigned int)n,
mxnames, mxtarget, options, now, local_ttl, namebuff, edns_pcktsz);
if (m >= 1)
send_from(listen->fd, options & OPT_NOWILD, (char *)header, m, &source_addr, &dst_addr);
send_from(listen->fd, options & OPT_NOWILD, (char *)header, m, &source_addr, &dst_addr, if_index);
else
last_server = forward_query(listen->fd, &source_addr, &dst_addr,
last_server = forward_query(listen->fd, &source_addr, &dst_addr, if_index,
header, n, options, namebuff, servers,
last_server, now, local_ttl);
return last_server;